Calculate Your Vitamin D Requirements

How much Vitamin D do I need to reach a desirable blood level?

Vitamin D

Enter your current weight
Enter your Vitamin D blood level
Enter your daily Vitamin D intake (optional)

Amount of Vitamin D Needed to Reach Your Target Blood Level (including current intake):

0 IU

Add this much vitamin D per day to your current regimen to reach the target level. Up to 4,000 IU of vitamin D per day is considered the upper limit. We recommend you retest in 3 months to see if this dosage is sufficient or needs to be adjusted. Please consult your doctor before making changes to your diet or supplementation regimen.

Examples
  • A person weighing 150 lbs with a Vitamin D blood level of 15 ng/mL and current intake of 1000 IU/day would need to increase their total intake to more than 2800 IU/day to achieve a blood level of 30 ng/mL.
  • A person with the same current and target blood level and intake, but who weighs more, like 200 lbs for example, would need a dose of at least 3400 IU/day.
How Can You Find Out Your Vitamin D blood level?
You will need to take a Vitamin D Blood test to find out your level in order to use the Vitamin D Calculator.
Vitamin D Test

The Vitamin D Test measures the amount of this important nutrient in your blood using a simple finger prick collection method that you can do at home.

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Dosage Info

The Upper Limit of supplemental Vitamin D intake set by the Institute of Medicine is 4000 IU/day. Learn more >

It is possible to take a higher dose, like 5000 IU, every other day to achieve an average daily dose of 2500 IU/day.

Loading doses or very high doses of Vitamin D taken every week or two have also been shown to be safe and effective at raising Vitamin D levels.

To determine the loading dose recommended by the calculator, multiply the daily dose by the number of days between doses. For example, a daily dose of 2000 IU/d would equal taking 28,000 IU every 2 weeks (2,000 IU/day x 14 days). Please consult with your healthcare provider before using loading doses as your regimen.

What kind of Vitamin D Should I Take?

Vitamin D3 is produced when the body is exposed to sunlight (ultraviolet B radiation sunlight). Our bodies are amazingly efficient when it comes to producing vitamin D3. Vitamin D3 is typically better absorbed than Vitamin D2 supplements; Vitamin D2 is the vegetarian source. There are very few foods
in nature that contain it.

Now What?

1

Use this information to make changes to your lifestyle, such as supplementing, increasing sun exposure, or making changes to your diet.

2

Confirm your Vitamin D level has improved with dietary changes by re-testing every 6 months.

1

Use this information to make changes to your lifestyle, such as supplementing, increasing sun exposure, or making changes to your diet.

2

Confirm your Vitamin D level has improved with dietary changes by re-testing every 6 months.

These statements have not been evaluated by the Food and Drug Administration. This test is not intended to diagnose, treat, cure, prevent or mitigate any disease. This site does not offer medical advice, and nothing contained herein is intended to establish a doctor/patient relationship. OmegaQuant, LLC is regulated under the Clinical Laboratory improvement Amendments of 1988 (CLIA) and is qualified to perform high complexity clinical testing. The performance characteristics of this test were determined by OmegaQuant, LLC. It has not been cleared or approved by the U.S. Food and Drug Administration.